Lawrence samuel



(No Model.)

L. SAMUEL.

DOOR CHECK.

No. 473,785. Patented Apr. Z6, 1892.

a Mlm,

UNITED STATES PATENT OFFICE.

lLAwRENcE sAMUEL, oE LONDON, ENGLAND.

DOOR-CHECK.

SPECIFICATION forming part of Letters Patent No. 473,785, dated April26, 1892. Application tiled September 8, 1891. Serial No. 405,101. (Nomodel.)

To a/ZZ whom it' may concern:

Be it known that I, LAWRENCE SAMUEL, a subject of the Queen of England,residing at London, England, have invented certain new and usefulImprovements in Bolts or Fasteners for Doors, Windows, and the Like, ofwhich the following is a specilication.

This invention relates to a fastener for doors of various kinds-such ashouse-doors, railway-carriage doors, cabin-doors, and the like, and alsowindoW-sashes and the likeand is so designed that it may be used as abolt for entirely fastening the door when closed, or may be employed forthe same purpose as the well-known door-chain which allows the door tobe opened to a certain extent but no farther.

In the accompanying drawings, Figure l is an elevation of a portion of adoor and frame with the fastener attached. Fig. 2 is a sectional viewshowing the fastener in plan; and Fig. 3 is a similar View to Fig. 2 andshows the door partly open with the fastener taking the place of theordinary chain.

Like letters represent like parts throughout the drawings.

A represents the door, and B the framework, O being a yoke, having along slot C and pvoted at C2 to the frame-bracket D, which latter may besecured in any convenient manner to the frame B, as bythe screws D. Uponthe door is pivoted a latch E upon a plate F, secured to the door A bythe screwsF. The end of the plate F terminates in a projecting T-head G,the shape of which can be clearly understood from the drawings, Fig. 1showing it in face view and Figs. 2 and 3 in edge View. A portion of theslot C ot' the yoke C is enlarged at C4 to permit the passage of thehead G, the remaining portion of the slot being too small to allow ofthe head G passing through it, although the neck G can freely pass inthe slot. The latch E is provided with a balance weight or handle E', sothat it naturally rests in its normal position, as shown in thedrawings, with the weighted handle hanging down. Vhen in this positionthe head or latch E is so turned that the yoke C is secured to the doorand the latter cannot be opened, as the yoke cannot when so held beturned upon its pivot C2. The

free ends of the yoke C at C2 are sprung upon such as corkscrews or thelike, the position thus naturally accorded to the yoke being thatapproximately indicated in dotted lines in Fig. 2. This position is suchthat the head G of the plate F cannot pass through the enlargement C2 ofthe yoke-slot C', and consequently when the door is opened it pushesagainst the yoke, turning it upon its pivot C2, and the neck G slides upthe slot IO until the position indicated in Fig. 3 is reached, when thedoor is as Wide open as the yoke will allow, and the head G prevents theyoke coming off the plate F. In this position the yoke acts in a mannersimilar to and takes thev place of the ordinary door-chain. Thespringjaws of the yoke, while serving to normally retain the yoke at theangular position previously described, have the further effect of makingit work stifliy upon its pivot," with the result that no slamming of thedoor or sudden shock will be liable to turn the yoke upon its pivot andthrow it so far open that the head G, passing through the enlargementO2, would place the head upon the wrong side of the yoke, and thus whenthe door opened cause the yoke to be useless. This danger would beliable to occur if some such means as those described Were not employedfor holding the yoke in its required position. The same thing,doubtless, might be accomplished by employing tapered pivots, so thatthe pressure of the spring or the pressure of nuts upon the ends of thepivot would produce the required stiffness in the movement of the yokearound its pivots, or even an independent spring operating upon thejoint in the manner commonly adopted in pocket-knives; but such deviceswould be more costly and more liable to get out of order than the onedescribed and would be mere coloralole imitations of it. WVhen it is notrequired to use the yoke, it may be turned back against the frame-workout of the way of the plate F G.

The operation of .this device is as follows: Suppose the yoke tohavebeen turned back out of the way and the door closed and it isdesired to apply the yoke. The yoke is turned upon its pivot until,after passing over the IOO head G, it comes in contact With the latch E,which, as Will be seen in the drawings, is pro vided With two cam-facesE2, leavingvonly a flat top E3, pointed at both ends, as clearlyindicated in Fig. l of the drawings. The sides of the yoke C, coming incontactwith the two position (shown in full lines in Fig. l) and theyoke is securely fastened. loundo the .fastening, the latch can beturned into its horizontal position by the hand of theoperator upon vthehandle E. rlhe thickness of the yoke C and the plate F arepreferablyabout the same, so that lthe latch can easily'turn upony theplateF when the yoke is closed Without its A,Working` face being`stopped by contact with the yoke. If desired, a reversal of the positiondescribed may bem'ade. Those parts which have been previously describedas being xed to the door can be placed upon the j amb or frame and thosewhich have been described as placed upon the frame may be placed uponthe door.

I claim- V', -Ina fastener such as described, the cornbination, with theplate having the headed end and the pivoted yoke having the slottherein, enlarged at one end and co-operating With the headed plate, ofthe pvoted latch having the elongated body, adapted to pass through theyoke, and the cam-.surfaces co-.operating with the yoke .to turn thelatch into proper position to enter the slot in the yoke, substantiallyas described. y y p Y I In testimony whereof I have 'hereto set my handin the presence of the two subscribing witnesses.

LAWRNCE SAMUEL.

fitness-es: HORATIO SAGIN,`

WILLIAM RICHARDSON.

